Unreal Engine Issues

Datasmith doesn't import specific IFC files correctly

Sequencer auto-generated thumbnails should not replace manually-catpured thumbnails.

Vertex Interpolate Node Doesn't Work with Lightmass

The vertex interpolate node doesn't work with lightmass. Found in 4.19 CL# 4033788, 4.20 CL# 4233996, and 4.21 CL# 4258917 ...

C.haos Cloth : ClothLOD does not change when out of view

Cloth LOD Index is changed only during the mesh is on the screen. LOD Index is set to 0 at spawning, so clothing simulation runs as minimum LOD level until the mesh is in the field of view. It's no ...

Contact Offset no longer appears to have an effect

When modifying the contact offset in a project it appears to have no effect. The setting that worked in a previous engine version (4.19) now collide in the same way as the default settings. ...

IVideoRecordingSystem::EnableRecording call on Windows shifts viewport drawing position

The viewport is shifted by the IVideoRecordingSystem::SetRecording call. This problem occurs in play standalone mode and packaged build running as window mode. (not occur in fullscreen mode) The vie ...

bStaticWhenNotMoveable in Lighting category instead of Physics

"UPrimitiveComponent::bStaticWhenNotMoveable"'s category is set to Lighting, not Physics. This causes it to be hidden when lighting-related properties are hidden, even though it controls physics sta ...

Toggling Vertex Colors on in Static Mesh Editor makes the viewport all white

When turning on the Vertex Color option in the static mesh editor, the whole viewport turns white. ...

Lighting channels are not supported with tiled lighting

Reported via UDN ...

PVRTC texture is sampled as white when the uv value is very close to 0

When the uv value is very close to 0 ( < 0.001 ), the boundary value of the PVRTC texture is sampled as white. please refer to attached images and sample project. problem goes away when changing th ...